[@neon67 Participant 5 years, 9 months ago]

This is more a question to the author of the theme you are using. Start with this.

If the theme is not intended for bbpress, you can make a separate page (item in the menu) – for example, using shortcodes – to create page user profile.

The bbpress shortcodes are in the bbpress codex.

If this is still difficult, there are special plugins